 | | Re: Expansion Board and smooth PWM
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the exp bd doesn't need a new pcode_hb.s19, so there's no problem. fred In your message you said: (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Expansion Board and smooth PWM
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Question. Since the expansion board requires a new lib_hb.c and the smooth PWM routines require a different lib_hb.c and pcode_hb.s19, can we have both expansion board and smooth PWM together? John Schneekltoh (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Edit the gerber file !!!
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Hi.Anyone of u knows how to edit an image in GC-Prevue?The problem is that I cannot get the accurate negatives of the hb solder side,as there is a bit of shorting that occurs in the image file created by GC-Prevue for the exact resolution,whereas (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: serial communications
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Dear Casey Russell, When pcode is disabled, the handy boards stops treating the data received on the serial port,in the manner the pcode wants it to. The bytes it receives through the com2 port is then just plain data for it. It should know what to (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: wireless communication
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I'm glad you mentioned the Nuts & Volts article, "Naked Data"! I've used the MING microdevices RF transmitter and receiver units with success! The 1200 bps isn't fast but great for small projects such as mobile robots. I used the MING RF units with (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: wireless communication
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for RF communications, I recommend Linx Technologies (URL) They sell seperate transmitters, receivers, and antennas. For two-way communication, you would need two pairs, so the price is around $30 for a bidirectional link. They have speed ranges (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | wireless communication
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After reading some of the discussions about wireless communications, I remembered an article from Nuts and Volts ( (URL) ) May 1998. The title of the article is "Naked Data", Explore the power of wireless data communications using inexpensive (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: I have made a i2c routine for the handy board
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I would be interested too, thanks in advance... :-) Victor G. Ruiz Aranda ruizvic@mx1.ibm.com Coordinador ASCA/IAS Planta de Manufactura T/L 877-7306. Ph Number 011-523-669-7306 I/T (Information Technology) Guadalajara, Jal. Mexico. Laszlo Roska (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: .asm --> .s19
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The original IC and pcode was originally written on a Unix machine. There are scripts and a makefile that simplify the compile procedure. I use a Linux PC to modify the pcode all the time. If you have access to one, download the original pcode (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: .asm --> .s19
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There is an article in DDJ on the WOOKIE 68HC11 emulator in Mar 99... There are files in www.msoe.edu/eecs/ce.../resources including GNUs gcc C compiler with a back end for 68HC11.. I think that it is targeted for the rug warrior. You may need to (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | .asm --> .s19
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Hello I made some changes to the pcode_hb.asm file (by Julian Skidmore for the 100 steps PWM) and I need to compile/assemble it into a .s19 file (pcode_hb.s19) before I can download it onto the HandyBoard. It seems to me that I require both a C (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Polaroid sonar problems
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I also found that my neon light in my magnifying lens lamp caused erroneous readings. When I turned it off or moved it away the readings normalized (gave the correct results). Shielding wasn't effective in this instance. I did completely away with (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid sonar problems
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(...) I assume that your sonar pings (makes a clicking sound). If so, then you may be getting a premature echo. You might try mounting the transducer in putty to absorb vibration. You could try lengthening the blanking interval to make sure that the (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Bipolar Stepper Motors
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First thing take an ohm meter and "read" your coils. From any wire you should have one other wire at a low resistance and two at a high resistance. This will first determine if you have it wired right. On my steppers the outside two form one coil (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: I have made a i2c routine for the handy board
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i would be interested. thanks (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Bipolar Stepper Motors
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Hi, everyone. I was wondering if somebody could help me. I am trying to control a 2 phase bipolar stepper motor. I found a web page at : (URL) talks about controlling bipolar stepper motors. But I just can't seem to make it work. When I use the code (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: serial communications
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some days ago i played with this too. i send you my files ... hope it helps ;) /* beginning of serial.c */ int char1; void disable_pcode_serial() /* necessary to receive characters using serial_getchar */ { poke(0x3c, 1); } void (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | serial communications
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I want to disconnect interactive C from the handy board and send instructions to it via the hyper terminal on Windows 95. I have followed the instructions given in the HB technical reference. I am confused as to the procedure for accomplishing my (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Mindstorm hacking program
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I heard that someone at MIT created a program that can hack into and advance Lego mindstorm's computer. Does anyone know where i can find this site where i can download the program? =) chen (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Working with Legos
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Servo Tape: Available at R/C suppliers, this is sheet rubber with very strong stickum on both sides. The only problem is that it will creep, so if the part will be under stress you should augment servo tape with either Ty-Raps or a fillet of (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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